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Finding the Fourth Proportional to 172,917.39, 259,398.77 and 67,722.69

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Solution

The fourth proportional to 172,917.39, 259,398.77 and 67,722.69 is: 101,592.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,917.39 : 259,398.77 = 67,722.69 : x
  2. Step 2: Convert to fraction form
    172,917.39/259,398.77 = 67,722.69/x
  3. Step 3: Cross multiply
    172,917.39x = 259,398.77 × 67,722.69
  4. Step 4: Simplify right side
    172,917.39x = 17,567,182,487.09
  5. Step 5: Solve for x
    x = 17,567,182,487.09/172,917.39
  6. Step 6: Final answer
    x = 101,592.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.